Component Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Sunroof Switch
- Ignition OFF, disconnect the harness connector at the sunroof switch.
- Test for infinite resistance between the switch terminals listed below and the ground circuit terminal 5 with the switch in the neutral position.
- Express open/close terminal 1
- Sunroof close terminal 4
- Sunroof open terminal 6
- Vent close terminal 8
- Vent open terminal 2
- If not the specified value, replace the sunroof switch.
- Test for less than 5 ohms between the switch terminals listed below and the ground circuit terminal 5 with the switch in the appropriate position.
- Express open/close terminal 1
- Sunroof close terminal 4
- Sunroof open terminal 6
- Vent close terminal 8
- Vent open terminal 2
- If greater than the specified value, replace the sunroof switch.